Casting-machine.



C. H. LISTER.

CASTING MACHINE APPLICATION FILED APR. 26, 1911.

Patented July .23, 1912 a SHEETSSHEET 1.

w\$ an MN G. H. LISTER. CASTING MACHINE. APPLICATION FILED APR. 26. 1911.

Patented July 23, 1912.

1 3 SHEETSSHEET 2.

Imam/Br Charles lian/r g i/612:1" k v 074442.

3 SHEETS-SHEET 3.

Patented July 23, 1912.

Inverzior- 1 .J J 4 J T u P o in L 8 rL M z 3 /0 a a z z z o F w C. H. LISTER. CASTING MACHINE. APPLICATION FILED APR. 26. 1911.

LU i/Tnas S66 Charles Han/r5 Lister CHARLES HENRY LISTER, or Nearest. PAUL, MrNNEsopA.

oAsrmo-MAcHIiTE.

Specification of Letter sTatent. Patented J uly 23, 1912.

Application filed April 26, 1911. Serial No. 623,544.

To all whom z't may concern:

man, a citizen of the United States, residing at North St. Paul, in the county of Ramsey and State of Minnesota, have invented new and useful Improvements in Casting-Machines, of which the following is a specification.

My invention relates to improvements in casting machines.

It is particularly, though not exclusively, adapted to produce sash weights and similar objects. Its object is to provide a casting machine having a connected series of durable molds, designed to automatically open for discharging the cast product and, to close for refilling, whereby castings may be produced with a minimum of labor and expense.

A further object is to provide a casting machine having a series of continuously movable molds adapted to be submerged after being'filled, to cool and solidify "the contents of the molds so that the molds may be emptied and dried before they are refilled.

A further object is to provide a machine of the class described having a plurality of metal molds and means whereby saidmolds are successively filled, submerged, opened, emptied, closed and locked for refilling.

In the drawings Figure 1 is a side elevation of my improved casting machine, a part of which is broken away to show the interior 3 of the submerging tank; Fig. 2 is a plan view of the same; Fig. 3 is an end elevation in detail showing the means for closing the molds; Fig. '4 is a detail view of one ofthe molds, .a part of which is broken away to show the interior of the same; Fig. 5 is a plan view ofthe same; Fig. 6 is a detail view showing a modified form of my mold; Fig.7 is a side elevation in detail of the means for filling the molds, andFig. 8 is a side elevation iii detail of the means for forcibly emptying the molds.

Referrin to the accompanyingv drawings, I have use the reference numeral 10 to indicate the frame upon which the principal parts of the machine are mounted. The drive shaft 1]. is journaled in the frame 10 and carries the drive pulley 12 and the sprocket wheel 13. The shaft 14, also journale'd in the frame 10, is provided. with sprocket wheels 15 and is rotated by the gear wheel 16 which meshes with the gear Be it known that I, CHARLES HEiIRY LIS-.

wheel 13 on the drive shaft 11. The endless chains 17, driven by the sprocket wheels 15, are supported and guided on the idle sprockets 18 and the downwardly curved guide rails 19, which may be made of angle iron. Rectilinear rails 20, similar in construction to the guide rails 19, retain the chains throughout their course. The mold supports 21 are carried between and mounted transversely upon the chains 17 and hold the divided molds 22, the stationary members 22 of said molds being rigidly fixed on said supports while the movable members 22 are slidably mounted thereon. The bell cranks 23 are pivotally mounted in the mold supports 21 and are connected by the ad-' justable links 24 to the movable mold members 22 The bell cranks 23 are designed to open and close the molds 22, the movement of said cranks in one direction being limited by the set nuts 25. The rollers 26 are arranged at the end of the cranks 23 and are adapted to engage the trip barv 27 on the frame 10 to open the molds 22 and engage the bar 28 to close said molds. These bars 27 and 28 are mounted on the frame 10 in the path of the rollers 26 and extend at angles relative to their line of travel. The cranks 23 and the connecting links 24 are so arranged that the points of connection between the mold members 22", links 24, cranks 23 and supports 21 will fall inposition substantially in line when the molds 22 are closed. This connection forms a lock and securely engages the mold members 22 i and 22 The chains 17 pass through the tank 29 beneath the guide rails 19 and carry the'molds 22 therethrough. The tank 29,

supported in the frame 10, is adapted to contain any suitable fluid for cooling the molds and their contents and is supplied with an inlet pipe 30 and outlet pipe 31. y I have provided means for filling the molds as follows: The carriage 32 is mounted on the frame 10 and supports the carrier 33 on which the ladle 34. is pivotally mount ed. The carrier 33 is provided with cogged rollers 35, one of said rollers being;connected with the crank 36, which when oscillated, moves the carrier 33 on the carriage 32. The Y crank 37 is rigidly attached to the'ladle 34 and is adapted to tip the same. Bar 38,

pivotally mounted on the frame 10 at one end, has a slotted connection near its other '44 and the arm 43 to be engaged end with the carriage 32 which is held in normal position, as shown in heavy lines in Fig. 7, by the spring 39.

The lower end of the bar 38 is arranged in the path of the lugs 40-on the mold supports 21 and hen engaged by one of said lugs moves the carriage 32 in t esame direction as the molds 22, which are below it, and at substantially the same speed. The carriage 32 is moved to its normal position by the spring 39 when the bar 38 ecomes disengaged from the lugs 40. This occurs when said bar reaches the position indicated in dotted lines in Fig. 7. The carriage 32 is moved from operative engagement with the lugs 40 and stopped by moving the adjustable stop 41, whlch is arranged on the frame 10, is so placed as to allow the movement of the carriage 32 to a position in which the bar 38 is removed from the path of the lugs 40. This position of the carriage 32 permits the filling of the ladle from any convenient source, such as the furnace, indicated by the reference numeral '42 in Fig. 1 of the drawings.

'As castings will sometimes adhere to the molds, means for forcibly discharging them after the molds have been opened are desirable and are shown in Fig. 8, as follows: The bell crank 43 is pivotally mounted on the frame 10 above the conveyer. The arm 43 of the crank 43 is normally held in the path of the lugs 40 by the spring is arranged to enter a mold and forcibly discharge its contents as said arm 43 is raised by engagement with the lug 40 of the preceding mold. The spring 44 is connected to the frame at one end and to the arm 43 at the other and returns the crank 43 to its normal position as the arm 43 is disengaged from the lugs 40.

my convenient means, such as a chute 45 and a cart 46, may be provided for removing the molded product from my machine. I do not limit myself to this arrangement, however, as it is obvious that other means for'this purpose might be substituted without departing from the spirit of my invention.

In operation, the carriage 32 is moved forward a predetermined distance by each mold; it is then released from said molds and returned b thespring 39 to a position y the next succeeding mold.

uring the forward motion, which is at substantially the same rate as that of the molds, the ladle 34 is tilted by the crank'36 operated by hand or other suitable means and the molten metal is poured therefrom into said mold. The chains 17 travel slowly in the direction indicated by arrows in Figs. 1 and 2 of the drawings and the metal is partially cooled as it is carried toward the tank. The mold then passes into the tank 29 where it is further cooled, thus solidifying and inaaaiea contracting its contents. The mold is opened as it leaves the tank, and the cast product is discharged therefrom. The mold, which is still warm, closes as it passes around the frame, the heat therein being suflicient to dry it before it advances far enough to be re-filled.

Having described my invention, what I claimas new and desire to protect by Letters Patent, is:

1. In a casting machine, a frame, a conveyer consisting of a series of traveling molds mounted on the frame, reciprocatlng means operated by said conveyer for filling the mol s and means for contents of said molds.

2.. In a casting machine, a frame, a conveyer consisting of a series of traveling molds mounted on the frame, reciprocating means operated by said conveyer for filling the molds, means for discharging the contents of said molds and means for delivering the molded product.

In a casting machine, veyer on the frame,

discharging the a frame, a conmold supports on the conveyer, divided molds on said supports,

each comprising a stationary and slidably mounted mold member, levers pivoted on said supports, adjustable links connecting said levers and movable members, means on the frame for movin the levers to open, close and lock said mo ds.

4. lln a casting machine, a .continuously moving conveyer carrying molds, and a reciprocating source of molten metal su ply o erated by said conveyer for success1vely fi ling said molds.

5. In a casting machine, veyer on the frame, molds on the conveyer, a carriage movably mounted on the frame and above the conveyer, means in operative connection with the conveyer for moving the carriage a predetermined distance, means for returning the carriage, a ladle, capable of pivotal movement and lateral ad uStment,

a frame, a conmounted on the carriage and means for tilt ing the ladle."

6. In a casting machine, a frame, a continuously moving conveyer on the frame, molds on the conveyer, a reciprocating carriage on the frame, a laterally movable carrier on said carriage, a ladle pivotally mounted on said carrier, means for adjusting the carrier relative to the carriage, means for locking said carriage in different positions and means for tilting said ladle.

In a casting machine, a frame, a conveyer on the frame carrying a series of molds, a reciprocal ladle in operative connectlon with the conveyer for filling the molds, means actuated by said conveyer and adapted to forcibly discharge the contents of said molds.

'8. In a casting machine, a frame, a conveyer on the frame,

means for driving the conveyer, mold supports on said conveyer, divided molds 0n the supports, levers fulcrumed on said supports and connected with the movable members of said molds, and trip bars on said frame for engaging said levers to open and close said molds.

9. In a. casting machine, a frame, a tank and conveyer on said frame, means for driving said conveyer, mold supports on the conveyer, divided molds on the supports, levers fulcrumed on said supports and adjustably connected with said molds and trip bars on said frame for engaging said levers to open and close said molds.

10. In a casting machine, a frame, drive sprockets in the frame, idle sprockets on said frame, chains on said sprockets, mold supports on said chains, stationary and movable mold members on'the supports, levers fulcrumed on said supports, adjustable links connecting said movablemold members and levers, rollers on said levers and trip bars on the frame for operating said levers to engage and disengage said mold members.

11. In a casting machine, a frame, drive and idle sprockets on the frame, chains on said sprockets, mold supports on said chains, a tank in the path of said supports, stationary and movable mold members on the supports, levers fulcrumed on said supports,ad-

justable links connectin said movable mold members and levers an bars onthe frame for operating said levers to open and close the molds.

12.- In a casting machine, a frame, a con-L I veyer on the frame, mold supports'on said conveyer, molds on said supports, lugs on the mold supports, and a lever ivoted on the frame and operated by said lugs to forcibly discharge the contents of the molds.

ary and a slidably mounted mold member, a

lever fulcrumed on each of said supports and adjustably connected with its corresponding 'slidable mold member, and means on the frame for operating said levers whereby said molds are successively filled, opened for the discharge of their contents, closed and locked for refilling.

14. In a casting machine, a frame, a conveyer on the frame, mold supports on the conveyer, molds and lugs on the supports, a slotted bar pivot-ally connected to the frame in the pathof said lugs, a carriage on the frame connected with said bar, said carriage being adapted to support a ladle or the like, a spring for holding the carriage in position and an adjustable stop for limiting the movement of said carriage.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.-

CHARLES HENRY LISTER.

so I 

